2004 Hummer H2 recalls and problems

The 2004 Hummer H2 has 3 safety recalls and 59 owner complaints filed with NHTSA. Recall repairs are free at any Hummer dealer.

Recalls

Complaints

Crashes / fires

6 / 1

Injuries / deaths

5 / 0

Recalls may cover only some 2004 Hummer H2 vehicles. Check your VIN at NHTSA ↗ to see open recalls for your exact car.

2004 Hummer H2 recalls

Recall 05V-163: Seat Belts

Reported Apr 22, 2005 · 1,359,824 vehicles affected · GENERAL MOTORS CORP.

Problem: On certain crew cab pickup trucks and sport utility vehicles, the 2nd row center occupant seat belt routing may make it difficult to position the lap portion of the safety belt low around the hips of occupants, especially smaller occupants, seated in this position. Appropriate use of a child seat or booster seat, as recommended for small children, does improve the fit condition for this user group. In addition to instructions on proper infant and young child restraint (With child seats or boosters), special verbiage for restraining older child is included in the owner's manual. Also, the suggested seat belt fit/routing for adults, irrespective of seating position, is described in the owner's manual text.

Risk: A lap portion of the seat belt routing that is not low and snug on the hips can allow the lap belt to ride up on an occupant's abdomen instead of fitting low around their hipbones, and therefore, can expose them to more risk of abdominal and internal organ injury.

Fix: Dealers will cut open the guide loop, remove a portion of the loop, and then the remaining two sides should be folded over and secured with a retainer free of charge. The recall began on july 21, 2005. Owners may contact cadillac at 1-866-982-2339, chevrolet at 1-800-630-2438, gmc at 1-866-996-9463, or hummer at 1-800-732-5493.

Recall 05V-043: Service Brakes, Hydraulic

Reported Feb 8, 2005 · 77,411 vehicles affected · GENERAL MOTORS CORP.

Problem: Certain trucks, sport utility vehicles, and vans equipped with bosch hydro-boost brake assemblies, the hydraulic brake booster pressure accumulator may crack and separate from the hydro-boost assembly during normal operating conditions.

Risk: If a separation occurred and the hood of the vehicle were open, fragments from the accumulator could cause injury to people in the immediate area. The presence of this crack or fractured surface could allow the hydraulic fluid to leak from the accumulator circuit of the booster assembly. The loss of fluid would cause increased steering and braking effort and a crash may occur without prior warning.

Fix: Dealers will test the hydro-boost assembly for functional operation of the two-function valve. If the hydro-boost assembly fails the test, dealers will replace the assembly free of charge. The recall began on march 23, 2005. Owners may contact chevrolet at 1-800-630-2438, gmc trucks at 1-866-996-9463 and hummer at 1-800-732-5493.

Recall 04V-045: Service Brakes, Hydraulic

Reported Feb 4, 2004 · 68,875 vehicles affected · GENERAL MOTORS CORP.

Problem: Certain sport utility vehicles, pickup trucks, and passenger vans fail to comply with the requirements of federal motor vehicle safety standard no. 135, ?passenger car brake systems.? Some of these vehicles were produced with an out-of-specification brake hydro-boost housing relief valve bore.

Risk: Consequently, the valve o-ring seal may fracture. Steering efforts may be slightly increased while braking or parking. Under certain driving conditions, a fractured seal may require a slight increase in the applied brake pedal effort to achieve the same vehicle deceleration rate as prior to the seat fracture.

Fix: Dealers are to replace the hydro-boost relief valve. The recall began on june 18, 2004. Owners should contact cadillac at 1-866-982-2339; chevrolet at 1-800-630-2438; gmc at 1-866-996-9463; or hummer at 1-866-486-6376.

2004 Hummer H2 problems reported by owners

Problem area	Reports
Electrical System	14
Visibility	11
Service Brakes	8
Steering	6
Service Brakes, Hydraulic	6
Suspension	3
Structure	3
Air Bags	3
Visibility/Wiper	3
Power Train	2
Unknown or Other	2
Electronic Stability Control (ESC)	2

Most reported parts

Structure › Frame and Members — 2
Electrical System › Instrument Cluster/Panel — 2
Visibility › Windshield Wiper/Washer › Motor — 2
Suspension › Front › Control Arm › Upper Ball Joint — 1
Steering › Linkages › Knuckle › Spindle › Arm — 1
Electrical System › Ignition › Switch — 1
Visibility › Rearview Mirrors/Devices — 1
Steering › Hydraulic Power Assist › Power Steering Fluid — 1

Typical mileage at the time of the problem: 70,000 miles (median of owner reports).

Problems that are not covered by a recall are paid repairs; labor rates follow local mechanic pay — see what auto mechanics earn in each state.

Recent 2004 Hummer H2 complaints

Owner reports filed with NHTSA, as written (personal details removed). Complaints are not verified by NHTSA.

Electrical System · at 210,000 miles · reported Feb 10, 2026

Odometer Fraud. The contact purchased a 2004 Hummer H2. The contact discovered a mileage discrepancy after the purchase. The vehicle was a private sale. At the time of purchase, the vehicle mileage was 200,000. It was later discovered that the mileage on the Title was 210,000. Additionally, the contact stated she felt pressured to purchase the vehicle, signed the contract, and was unable to recoup the funds.

Engine · reported Feb 22, 2022

Yesterday I turned off the alarm and unlocked the doors via the keypad. I opened the driver door and my wife opened the passenger rear door and the Hummer H2 started. No key in the ignition and the fob does not have a start button. I then got in the car and inserted the key and turned the key to ON then to off and the vehicle would not shut off. Only after cycling through the gears was I able to shut off the vehicle. I have now disconnected the battery to prevent another unwanted start.

Suspension · at 100,000 miles · reported Sep 16, 2021

The contact owns a 2004 Hummer H2.The contact stated while driving at 35MPH, the contact stated the vehicle loss of control and forward momentum to the vehicle which caused the vehicle stalled and loss motive power. The contact who is a mechanic inspected the vehicle and notice that front differential carrier bolt had snapped was detached from the frame and connection to the engine. The vehicle was towed to the contact residence then towed later to a local dealer who inspected the vehicle diagnosed the failure the same as the contact that front differential carrier bolt was damaged and to be…

Service Brakes · at 160,000 miles · reported Jul 16, 2019

The contact owns a 2004 hummer h2. While driving approximately 25 MPH, the brake pedal was depressed and traveled to the floorboard. The stopping distance was extended. While examining the vehicle, the contact noticed brake fluid leaking under the subframe. The vehicle was not diagnosed or repaired. The manufacturer was notified. The local dealer was not contacted. The failure mileage was 160,000.

Tires · at 205,000 miles · reported Jul 15, 2019

The contact owns a 2004 hummer h2 equipped with aftermarket nitto mud grappler extreme tires, size: 37/13.5/20 (Na). The tires were purchased on november 28, 2018. The contact stated that the two front tires were worn more than halfway ever since they were purchased. The manufacturer was notified of the failure and stated that the tires were not designed for city driving. The tires were not replaced. The approximate vehicle failure mileage was 205,000 and the tire failure mileage was 2,000.

Other Hummer H2 years

2009 2008 2007 2006 200520042003

Compare all Hummer H2 years · All Hummer models

Frequently asked questions

Does the 2004 Hummer H2 have any recalls?

Yes — NHTSA lists 3 recalls for the 2004 Hummer H2: 05V-163 (seat belts), 05V-043 (service brakes, hydraulic), 04V-045 (service brakes, hydraulic). Not every vehicle is affected, so check your VIN at nhtsa.gov/recalls.

What is the most common problem with the 2004 Hummer H2?

Owners report electrical system problems most often (14 reports), followed by visibility (11). The typical mileage when problems were reported is about 70,000 miles.

Are Hummer recall repairs free?

Yes. Safety recall repairs are free at authorized Hummer dealers, whether you are the first owner or bought the car used.